Pump



E. GRAY July 16, 1929.

PUMP

Filed Oct. 3l, 1927 2 Sheets-Sheet 1 July 16, 1929. E. GRAY 1.720.672

PUMP

Filed Oct. 31, 1927 2 Sheets-Sheet 2 f -li Q s -a4 g "3g V l W 7 V f43 'i'. l /42 il 44 Patented July 16, 1929.

UNITED STATES ELLSWOBTH GRAY, F HOUSTON, TEXAS.

PUMP.

Application illed October 31, 1927. Selil N0. 229,863.

My invention relates to improvement in pumps of the reciprocating plunger type and relates particularly to pumps of the t pe in which no standing valve is employe It is an object of my invention to provide a pump of the character stated wherein no standing valve is employed and in which the operating parts are reduced to a minimum.

It is desired to provide a pump of this character in which the plunger may be rev moved when desired and the fluid in the pump barrel will be free to pass downward past the plunger when it is withdrawn from the well.

It is also an object to provide means to prevent the flushing of the sides of the well with the fluid in the pump barrel when the plunger is withdrawn.

The invention resides in the particular con- 20 struction and arrangement of the parts making up the completed pump and attention is directed to the drawings herewith wherein a preferred embodiment of the invention is disclosed.

In the drawing, Fig. 1 illustrates an assembly view partly in section and partly in elevation illustrating the lower end of the pump with the parts in operative position. Fig. 2 is a central vertical section through a pump barrel with the broken upper end of the pump therein. Fig. 3 is an extension of a pump barrel and plunger below the portion shown in Fig. 2, partly in elevation and partly in central vertical section. Fig. 4 is a similar view showing the part of the plunger and pump barrel below the section shown in Fig. 3 and Fig. 5 is a similar view of the lower end of the Fig. 6 is a transverse section on the plane 6-6 of Fig. 3. Fig. 7 is a similar section on the plane 7-7 of Fig. 4. Fig. 8 is a transverse section on the plane 8 8 of Fig. 5.

In constructing my pump in such manner that no standing valve is necessary it is necessary that there be a packing arrangement between the plunger and the pump barrel at two spaced points above and below the inlet for the liquid to the pump barrel. I have provided a pump barrel made up of 0 sections, the upper or inlet section 9 being connected to the lower end of the tubing 10. The section 9 is of smaller internal diameter than is the pump tubing 10 and is connected at its lower end to a lower pump barrel section 11. The section 9 has an outer cup or sleeve 12 which is connected with the body pump barrel and plunger.

of the pump barrel at .its lower end and extends u wardly in spaced relation from the body o section 9 to provide a s ace 15 between the same and the pump arrel. At the lower end of the space thus formed are provided a plurality of openings 14 leading from the space 15 to the interior 16 of the pup barrel.

1th1n the pump barrel'is a packing member 17 comprlslng a sleeve fitting tightly within the pump barrel and adapted to form a seat for compressible packing rings 18. The packing section or barrel 17 is formed to fit against the outer surface of the pum plunger 19 which reciprocates therein. The inner face of the section- 17 is recessed to rovide a space for the packing rings 18 which are supported at their lower ends upon a ring 20 supported resiliently upon a spring 2 1, .the lower end of which bears against a slmilar rmg 22 upon a within the lower end of section 17. The upper end of the section 17 has an annular recess 24 formed therein into which is fitted a aeklng ring 25 of lead, Babbitt or other so metal which makes a fluid-tight frict1onal contact with the barrel 9 and holds the said sleeve 17 rigidly in position.

e lower nipple 23 is rounded at its lower end at 26 to allow it to be inserted within the barrel 9, and is slotted upwardly at 27 to give resiliency thereto so that it may more closely engage with the pump plunger.

Fhe section 11 of the pump barrel is closed at its lower end by means of a bull plug 28 connected With the barrel 11 by means of a coupling 29.

The pump plunger which works within the barrel described comprises a tubular central section 19 which has a head 30 at its upper end connected to a valve cage 31 which is in turn connected with the sucker rod 32 extending to the surface'. The ball valve 33 within the cage 31 closes the upper end of the tube 9 in the usual manner.

At the lower end of the tube 19 is the inlet section 34 which has an inner chamber 35 of slightly larger diameter than the tube 19 and is formed with an inner tube 36 connected with the section 34 by ribs 37, as shown in Fig. 7. These ribs have slots 38 extending from the inner tube outwardly through the tube 36 and the plunger section 34 so as to allow entrance of fiuid from the pump barrel throu h said slots 38 to the inner tube 36. Sai tube 36 is closed at its nipple 23 screwed fil) upper end, its lower end extending beyond the plunger section 34, and has a Valye seat 3S) at its lower end, a ball valve 40 1s held resilicntly upwardly against said seat by means of a spring 41.

he spring 41 is supported at 1ts lower end upon webs 42 which serve as a connection between the plunger seet1on 43 below the section 34, to an inner tube 44. 'Ihe tube 44- is thus spaced from the outer plunger section 34 and serves to support the spring p 41 and to limit the downward movement of the ball 40 on the upward stroke of the ilunger.

'lhe section 43 of the plunger 1s reduced in diameter at it-s lower end as shown at 45 and its outer surface forms a seat for packing cups 46 and spacing rings 47 of the usual type, said packing cups being directed downwardly to prevent the passage of fluid upwardly7 past the plunger. 0 The lowermost of' the spacing rings is held in position by a nut 48, the lower side of which 1s formed with a pilot 49 of skeleton form to allow the free inlet of the fluid into the interior of the plunger.

In the operation of the pump, on the upvard stroke of the pump plunger fluid will be drawn into the space 15 between the pump barrel 19, said fluid passing through the openings 14 to the chamber 16 below the packing 18. It is free to pass downwardly in the pump barrel to the lnlet section 34 where it enters through the slots 38 to the inner tube 3G. It may then pass downwardly past the valve 39 into the lower end of the pump barrel.

On the downward stroke of the plunger the fluid thus trapped in the lower end of the pump barrel will be forced upwardly around the valve 40, which will be immediately seated and around the outside of the tube 36 and upwardly through the plunger and past the valve 33 at the upper end thereof and from thence to the surface.

It will be obvious that no standing valve is necessary in this type of construction. The principal packing member shown within the section 17 is adapted to automatically take up for wear through the instrumentality of the spring 21 and a. tight fluid seal may be obtained for a long period. It is also to be noted that when the pump plunger is withdrawn from the well for repair, or otherwise, the lower end of the plunger will engage with the packing section 17 and move it upwardly out of the pump barrel 1) and thus carry it with the plunger to the surface where it may be repaired if desired.

After the pump plunger has been raised above the section 19 of the pump barrel, the fluid in the tubing will be free to move downwardly through the pump barrel to the openings 14 and then upwardly through the chamber 15 into the casing. The function of the walls provided by the cup 12 is to prevent the fluid in the pump barrel from being directed against the walls of the screen or of the well so as to cause injury to the well. It is also to be noted that the cup 12 acts as a gas anchor. That is, it' prevents gas within the oil in the well from being drawn inwardly with the oil. The gas bubbles will tend to pass upwardly past the inlet and only the liquid will be drawn into the ump plunger.

It will be obvious to those skilled in the art that I have provided a simple construction of pump wherein no standing valve is required and wherein the working parts of. the pump may be withdrawn with the sucker rod to the surface and the fluid about the plunger may drain back out of the tubing as the plunger is brought to the surface.

Having thus described my invention, what I claim as new is:

' 1. In a pump, a ump barrel closed at its lower end, a pac ing sleeve within said barrel adjacent the upper end thereof, a pump plunger reciprocating within said sleeve, an inner tube in said plunger below said sleeve, said tube being closed at one end, a valve closing the other end of said tube, there being an inlet from without said plunger to said tube, and an upward passage for liquid passing said valve into said plunger, packing means on said plunger below said tube, and means to allow inlet of fluid to said pump barrel between said packing sleeve and said packing means.

2. In a pump, a pump barrel closed at its lower end, a packing sleeve within said barrel adjacent the upper end thereof, a pump plunger reciprocating within said sleeve, an'inner tube in said plunger below said sleeve, said tube being closed at its upper end, a valve closing the lower end thereof, a spring to hold said valve resiliently in place, there being an inlet from withoutsaid plunger to said tube, and an upward passage for liquid passing said valve into said plunger, packing means on said plunger below said tube, and means to allow inlet of fluid to said pump barrel between said packing sleeve and said packing means.

3. In a pump, a pump barrel closed at its lower end and having openings spaced upwardly from Said lower end, a tubular pump plunger reciprocablein said barrel, packing means between said plunger and barrel above and below said openings, a central chamber in said plunger, a tube in said chamber spaced from the walls thereof, means to form an inlet from the pump barrel to said tube, said tube being closed at one end, and a valve in the lower end thereof, said plunger having an upward passage for fluid passing said valve.

4. In a pump, a pump barrel closed at its lower end and having openings spaced upwardly from said lower end, a tubular pump plunger reciprocable in said barrel, packing means between said plunger and barrel above and below said openings, a central chamber in said lunger, a tube in said chamber spaced iliom the walls thereof, means to `form an inlet from the pump barrel to said tube, said tube being closed at one end, and a valve in the lower end thereof, said plunger having an upward passage for iuid passing said valve, and means to limit the downward movement of said valve from said seat. v c

5. In a pump, a pump barrel closed at its lower end and having openings spaced upwardly from said lower end, a tubular pump plunger reciprocable in said barrel, packing means between said plunger and barrel above and below said openings, means on said barrel outside said openings to deflect fluid upwardly, a central chamber in said plunger, a tube in said chamber spaced from the walls thereof, means to form an inlet from the pump barrel to said tube, said tube being closed at one end, and a valve in the lower end thereof, said plunger having an upward passage for lluid passing said valve.

In a pump, a pump tubing, a pump barrelthereon of smaller diameter than said tubing, said barrel being closed at its'lower end, a pump plunger in said barrel, packing elements between the plunger and barrel at the ends of said plunger, said barrel having openings therein between the packing elements, a tube in said pump plunger connected by passages to the outside of said plunger, a closure for one end of said tube, a valve at the other end, said plunger allowing a passage from said tube upwardly and a sleeve on said pump barrel spaced outside said openings to direct fluid upwardly from said pump barrel. k

In a ump, a pump tubing, a ump barrel therdbn of smaller diameter thailiD said tubing, said barrel being closed at its lower end, a pump plunger in said barrel, packing elements between the plunger and barrel at the ends of said plunger, said barrel having openings therein between the packing elements, a tube in said pump plunger connected by passages to plunger, a closure for one end of said tube, a valve at the other end, said plunger allowing a passage from said tube upwardly, and means outside said openings to deiect Huid issuing therefrom away from the walls of the wIell. b

8. n a um ,a ump tu mg, a ump barrel of srlnalldi diarpiieter than said tbing and closed at its lower end, a pump plunger in said barrel, a packing sleeve at the upper end of said barrel, packing rings in said sleeve about said lunger, said packing sleeve being removable with said plunger, packing at the lower end of said plunger, said barrel having openings into the space between said packing means, a tube in said plunger having Jcommunication through the wall of said plunger with the space outside said plunger, and a valve controlling the passage of liquid from said tube to the interior of said plunger, said plunger providing a passage upwardly for liquid.

In testimony whereof I hereunto affix my signzature this 22nd day of October, A. D. 192

ELLSWORTH GRAY.

the outside of said 

